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4 Written questions

3 Multiple choice questions

  1. wolf
  2. they provide positional information in the embryo
  3. 4.5 billion years ago ... 3.9 billion years ago

3 True/False questions

  1. Which of these are homologous structures?

    There are no homologous plant structures.
    Ivy leaf and pine needle
    Plant root and plant leaf
    "tinkering" with existing structures

          

  2. Evolution works by _____.

    "tinkering" with existing structures
    predicting the future
    molding the environment to conform to the organisms living in it
    constantly increasing complexity
    converging on a particular phenotype
    "tinkering" with existing structures

          

  3. Phylogeny is the evolutionary history of related groups of organisms. Organisms are grouped into taxa based on homologous characteristics, shared traits that result from common ancestry. Which statement is true?

    Homologous structures look the same and serve the same function, but they differ in evolutionary origin and structure.
    The term "monophyletic" refers to a taxon that includes an ancestral species and all of its descendants.
    Ancestral traits are always simpler than derived traits.
    The term "monophyletic" refers to a taxon that includes an ancestral species and all of its descendants.

          

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